With or without security, they all have a wireless protocol and I'm sure there are more than a few people on software development teams who know everything they need to so one can be hacked..
I'm completely dependent on mine and it's a bit worrisome that someone could effectively 'turn it off' as they walk by. Many have a sleep mode allowing the changes to take effect so changes won't take effect until the culprit is long gone. That leaves a lot of opportunity to make a lot of people pretty much just fall over dead at bed time.
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